EP2196617B1 - Anti-lift system for a closure device of the roller shutter type - Google Patents

Description

The present invention relates to a device for closing an opening defined at the level of a construction and comprising, on the one hand, a concealment element of this opening and, on the other hand, a system for preventing the lifting of this occulting element.

This invention relates to the field of manufacturing closure devices constituted by a shutter, a blind, a mosquito net, a garage door or the like. Such a closure device may comprise a number of security systems, in particular a system, usually called anti-lifting, and designed to prevent an uprising of the concealment element by a criminal attempting to enter a building by breaking in.

In fact, such a closure device comprises, usually, an element designed to ensure the concealment of an opening defined at a construction and that this device is intended to close.

Such an occulting element is in the form of an apron comprising, at its lower end, a blade, usually called the final blade. This apron also comprises, as the case may be, a succession of juxtaposed and articulated blades (as for example in the case of a rolling shutter or a garage door), a piece of fabric (in particular in the case of a blind) or a net (for a mosquito net for example), whose lower end is connected to such a final blade.

This closure device comprises, again, a shaft, to which is connected said apron, and on which is rolled, respectively from which is unrolled, this apron for the folding, respectively the winding, of this apron, this under the pulse of a control means, as the manual or motorized case, that includes this device.

The closing device further comprises lateral slides in which the lateral ends of the apron and, in particular the final blade, move during the deployment and folding maneuvers of this apron.

Advantageously, such a device can be equipped with a system, usually called anti-lifting, and designed to prevent the lifting of the deck, more particularly by a malefactor wishing to break into the building equipped with a such device and which, for this purpose, exerts a constraint under the final blade of this apron.

In particular, it is known from the document EP-1270865 a blind having lateral slides and an apron, the lateral ends of which run in these slides, and which is constituted, on the one hand, by a fabric and, on the other hand, by a threshold bar fitted to the end lower of this canvas.

This blind comprises an anti-lifting system constituted, on the one hand, by a hooking member, bordered on both sides by a cam track, and positioned at the bottom of a lateral slide and, on the other hand, by a latch equipping a lateral end of the threshold bar. This latch is pivotally mounted around an intermediate position between a locking position in which the latch can cooperate with the latching member to prevent lifting and an unlocking position in which the latch is cleared relative to the latch. hooking member.

When the apron of this blind is deployed, the latch of the anti-lift system traverses the cam track which causes the pivoting of this latch from an intermediate position to a locking position. When the latch reaches the latching member, it cooperates with the latching member preventing the lifting of the apron, this in a locked position of the deck.

When it is desired to fold the blind, it is first necessary to cause an additional deployment of the apron in which the latch disengages from the fastener and travels the rest of the cam track to its position. end at which this cam track allows pivoting of the latch in an intermediate position. It is then necessary to ensure the folding of the deck in which the latch travels, in the other direction, the cam track which causes the pivoting of the latch in an unlocked position. During this folding, the latch scrolls, in an unlocked position, in front of the latching member without cooperating with it which allows the complete folding of the deck.

In fact, in the blocking position of the deck, the final blade of this deck is located at a predetermined distance from the threshold of the opening allowing the additional deployment of the deck for its stall and then its folding.

This feature allows, then, a malefactor to exert a downward pull on the final blade to cause this additional deployment before lifting the deck which makes, in fact, the anti-lift system perfectly inefficient.

It is also known from the document DE 7309856U a closure device according to the preamble of claim 1.

The present invention is intended to overcome the disadvantages of devices of the state of the art.

• un élément pour l'occultation de cette ouverture et comportant au moins une lame ;
• des coulisses latérales à l'intérieur desquelles se déplacent les extrémités latérales d'au moins une lame de l'élément d'occultation ;
• au moins un système pour empêcher le soulèvement de l'élément d'occultation et comportant, d'une part, un organe d'accrochage formant gâche, d'autre part, au moins un loquet monté pivotant entre une position de verrouillage dans laquelle ce loquet coopère avec l'organe d'accrochage pour empêcher le soulèvement et une position de déverrouillage dans laquelle ce loquet est effacé par rapport à l'organe d'accrochage et, d'autre part encore, un moyen pour repousser le loquet depuis une position de verrouillage vers une position de déverrouillage sous l'impulsion d'un déplacement de la lame.

To this end, the invention relates to a closure device of the shutter type, mosquito net, blind, garage door or other, intended to equip an opening defined at a construction, and comprising:

• an element for occultation of this opening and comprising at least one blade;
• lateral slides within which the lateral ends of at least one blade of the concealment element move;
• at least one system for preventing the lifting of the concealment element and comprising, on the one hand, an attachment member forming a latch, on the other hand, at least one latch pivotally mounted between a locking position in which the latch cooperates with the latching member to prevent lifting and an unlocking position in which the latch is cleared with respect to the latching member and, secondly, means for pushing the latch from a locking position to an unlocking position under the impulse of movement of the blade.

• au moins une coulisse latérale comporte, intérieurement, au moins un loquet que comporte au moins un système pour empêcher le soulèvement et qui monté en pivotement sur une paroi interne d'une telle coulisse ;
• la lame de l'élément d'occultation comporte, d'une part, une première partie de lame pourvue du moyen pour repousser le loquet dans une position de déverrouillage et, d'autre part, une seconde partie de lame pourvue de l'organe d'accrochage, ces première et seconde parties de lame étant mobiles l'une par rapport à l'autre.

This closure device is characterized by the fact that:

• at least one lateral slide has, internally, at least one latch that comprises at least one system for preventing lifting and which is pivotally mounted on an inner wall of such a slide;
• the blade of the concealment element comprises, on the one hand, a first blade portion provided with means for pushing the latch into an unlocking position and, on the other hand, a second blade portion provided with the organ latching, these first and second blade portions being movable relative to each other.

The invention also relates to a closure device having the aforementioned characteristics and, at least partly, constituted by a shutter.

Thus, the anti-lifting system comprises, on the one hand and associated with a slide, a latch pivoting between a locking position and an unlocking position and, on the other hand and associated with a blade of the concealment element, a member for the attachment of this latch in the locking position and a means for pushing the latch in the unlocked position.

In fact, the means for pushing the latch is associated with the first part of the blade while the fastening member is associated with the second part of this blade, these first and second parts of this blade being advantageously movable. relative to each other between a first position and a second position.

In this first position, wherein these first and second blade portions are spaced apart from each other, the means for pushing the latch occult the latching member and prevents the latch to cooperate with the latching member. This allows a free movement of the occulting element inside the slides in this first position of the blade portions corresponding, typically and advantageously, to that deployment / folding controlled by a control means.

In the second position, wherein the first and second blade portions are brought together, the means for pushing the latch does not obscure the latching member which can then cooperate with the latch. This second position corresponds, typically and advantageously, to that adopted by the second blade portion after complete deployment of the occulting element or under the effect of a lifting resulting from a stress exerted under this second blade portion.

Thus, the inactivation and activation of the anti-lift system is advantageously ensured by a relative positioning of the first and second blade portions substantially corresponding to the position naturally adopted by these blade parts during the deployment control. / Folding of the occulting element, respectively under the effect of an uprising of this blade.

Another advantage is that this anti-lift system consists of simple design parts, arranged in a simple manner and having a simple kinematics.

An additional advantage is that this anti-lift system can be implemented at a closure device, either during its manufacture, or later during a renovation or an improvement of this device.

Other objects and advantages of the present invention will become apparent from the following description relating to embodiments which are given by way of indicative and non-limiting examples.

• la figure 1 est une vue schématisée d'un dispositif de fermeture de type volet roulant ;
• la figure 2 est une vue schématisée partielle et en perspective de l'extrémité latérale d'une lame initiale, d'une part, recevant l'organe d'accrochage et le moyen pour repousser le loquet que comporte le système anti-soulèvement et, d'autre part, que comporte l'élément d'occultation au niveau de son raccordement à un arbre d'enroulement ;
• la figure 3 est une vue schématisée partielle et en perspective de l'extrémité latérale d'une lame finale, d'une part, recevant l'organe d'accrochage et le moyen pour repousser le loquet que comporte le système anti-soulèvement et, d'autre part, que comporte l'élément d'occultation au niveau de son extrémité libre ;
• la figure 4 est une vue schématisée partielle, en perspective et en coupe d'une coulisse latérale recevant le loquet que comporte le système anti-soulèvement ;
• les figures 5, 5a, 5b et 5c sont des vues schématisées, en élévation et de côté du système anti-soulèvement, ceci dans différentes configurations de déplacement, d'immobilisation et de soulèvement de l'élément d'occultation.

The understanding of this description will be facilitated by reference to the appended drawings in which:

• the figure 1 is a schematic view of a closing device type roller shutter;
• the figure 2 is a partial schematic view in perspective of the lateral end of an initial blade, on the one hand, receiving the latching member and the means for pushing the latch that includes the anti-lift system and other on the other hand, what is included in the concealment element at its connection to a winding shaft;
• the figure 3 is a partial schematic view in perspective of the lateral end of a final blade, on the one hand, receiving the latching member and the means for pushing the latch that includes the anti-lift system and other on the other hand, that includes the occulting element at its free end;
• the figure 4 is a partial schematic view, in perspective and in section of a lateral slide receiving the latch that includes the anti-lifting system;
• the Figures 5, 5a, 5b and 5c are schematic views, in elevation and side of the anti-lift system, this in different configurations of movement, immobilization and lifting of the occulting element.

The present invention relates to the field of the manufacture of closure devices intended to equip an opening defined at the level of a construction, more particularly constituted by a dwelling.

If, in the following description, it will be more particularly mentioned a closure device adopting the form of a shutter (as illustrated figure 1 ), the present invention is, however, in no way limited and will find, also, an application in the context of a closure device consisting of a garage door, a blind, a mosquito net or other.

In fact and whatever the nature of this closure device 1, the latter 1 comprises a concealment element 2 designed to ensure the concealment of the opening of the construction equipped by this closure device 1.

Such an occulting element 2 comprises at least one blade 20, equipping the free end 21 of this occulting element 2, and usually called final blade.

• une succession de lames 22 juxtaposées et articulées entre elles dans le cas d'un volet roulant ou d'une porte de garage ;
• une toile ou un filet dans le cas d'un store, respectivement d'une moustiquaire.

This occulting element 2 comprises, again and connected to this final blade 20:

• a succession of blades 22 juxtaposed and hinged together in the case of a shutter or a garage door;
• a canvas or net in the case of a blind or a mosquito net.

Finally, this occulting element 2 may comprise, fitted to an opposite end 23 at its free end 21, an initial blade 24.

The closure device 1 further comprises a rotary shaft on which is wound and from which this occulting element 2 is unwound.

This rotary shaft is connected to the occulting element 2, either by being secured directly to this occulting element 2, or by means of at least one connecting means 25 associated, on the one hand, with this shaft and on the other hand, to the initial blade 24 of the occulting element 2 ( figure 2 ).

Additionally, said closure device 1 comprises a system (manual or motorized) for controlling the rotation of this shaft and, thus, ensuring the folding and deployment of the occulting element 2.

Preferably, this shaft (or at least a portion of the control system) is housed inside a box 3 that may comprise this closure device 1 and which then receives, also, the occulting element 2 in the folded position.

As visible figure 1 , this closure device 1 further comprises lateral slides (4; 4 ') extending below the box 3, and inside which move the lateral ends (26; 26 ') of the occulting element 2, more particularly the lateral ends (26; 26') of the blades (20, 22, 24) that the latter 2 comprises, this during the phases of folding and deployment of this occulting element 2.

In addition, this closure device 1 comprises at least one system 5 to prevent the lifting of this occulting element 2, more particularly under the effect of a stress exerted under this occulting element 2, especially under the blade. final 20 of it 2.

• un organe d'accrochage 6 formant gâche ;
• au moins un loquet 7 monté pivotant entre, d'une part, une position de verrouillage dans laquelle ce loquet 7 coopère avec l'organe d'accrochage 6 pour empêcher le soulèvement de l'élément d'occultation 2 et, d'autre part, une position de déverrouillage dans laquelle ce loquet 7 est effacé par rapport à l'organe d'accrochage 6 et autorise un déplacement libre de l'élément d'occultation 2 ;
• un moyen 8 pour repousser le loquet 7 depuis une position de verrouillage vers une position de déverrouillage sous l'impulsion d'un déplacement de la lame (20 ; 22 ; 24) dans les coulisses (4 ; 4').

In fact, such an anti-lifting system is associated with at least one blade (20, 22, 24) of this occulting element 2 and at least one slide (4; 4 ') of the closure device 1 , and includes:

• an attachment member 6 forming a keeper;
• at least one latch 7 pivotally mounted between, on the one hand, a locking position in which the latch 7 cooperates with the fastening member 6 to prevent the lifting of the occulting element 2 and on the other hand an unlocking position in which this latch 7 is erased relative to the attachment member 6 and allows a free movement of the occulting element 2;
• means 8 for pushing the latch 7 from a locking position to an unlocking position under the impetus of a movement of the blade (20; 22; 24) in the slides (4; 4 ').

• au moins une coulisse latérale (4 ; 4') du dispositif de fermeture 1 comporte, intérieurement, au moins un loquet 7 que comporte au moins un système (5) pour empêcher le soulèvement et qui est monté en pivotement sur une paroi interne (40, 40a) d'une telle coulisse (4 ; 4') ;
• la lame (20 ; 22 ; 24) de l'élément d'occultation 2 (à laquelle est associé une partie de ce système anti-soulèvement 5) comporte, d'une part, une première partie de lame (20 ; 22 ; 24) pourvue du moyen 8 pour repousser le loquet 7 dans une position de déverrouillage et, d'autre part, une seconde partie de lame (20 ; 22 ; 24) pourvue de l'organe d'accrochage 6, ces première et seconde parties de lame (20 ; 22 ; 24) étant mobiles l'une par rapport à l'autre.

According to the anti-lifting system 5 according to the present invention:

• at least one lateral slide (4; 4 ') of the closure device 1 has, internally, at least one latch 7 which comprises at least one system (5) for preventing the lifting and which is pivotally mounted on an inner wall (40 40a) of such a slide (4; 4 ');
• the blade (20; 22; 24) of the concealment element 2 (with which a part of this anti-lift system 5 is associated) comprises, on the one hand, a first blade portion (20; 22; 24) provided with the means 8 for pushing the latch 7 into an unlocking position and, secondly, a second blade portion (20; 22; 24) provided with the attachment member 6, these first and second parts blade (20; 22; 24) being movable relative to each other.

In particular, he was represented figures 2 and 3 an initial blade 24, respectively a final blade 20, having, on the one hand, a first portion (240, respectively 200) of blade (24; 20) provided with means 8 for pushing the latch 7 in an unlocked position and, on the other hand, a second portion (240 ', respectively 200') of blade (24; 20) provided with the attachment member 6, these first (240; 200) and second (240 ';200') parts blade (24; 20) being movable (240; 200) relative to each other (240 ';200').

As regards the latch 7, it adopts the form of a locking flap 70 comprising, on the one hand, a first longitudinal edge 71 pivotally mounted about an axis and on an inner wall (40, 40a). ) of a slide (4; 4 ') and, secondly, a second longitudinal edge 72, opposite to the first longitudinal edge 71, and intended to cooperate, as appropriate, with the fastening member 6 or with the means 8 to push back this latch 7.

According to a first embodiment not shown, this latch 7 can be pivotally mounted on the inner wall 40a of the bottom of such a slide (4; 4 '). In such a case, this latch 7 extends towards the occulting element 2 (more particularly in the direction of the blade (20; 22; 24) receiving the attachment member 6 and the repulsion means 8 this in a direction parallel to the plane of this occulting element 2.

However, according to a second type of embodiment illustrated figures 4 and 5 corresponding to the preferred embodiment of the invention, this latch 7 is pivotally mounted on a lateral inner wall 40, which comprises such a slide (4; 4 '), and which extends from the bottom (especially from of the inner wall 40a of this bottom) of this slide (4; 4 ').

Such a latch 7 can be defined directly at the inner wall itself (40, 40a) of such a slide (4; 4 ') then having such a latch 7 but is preferably defined at an insert 73 engaged in such a slide (4, 4 ') and having such a latch 7.

In this regard, it will be observed that, according to a preferred embodiment illustrated figures 4 and 5 , such an insert 73 may be engaged in an opening 41 (more particularly a cutout) that includes the wall (40, 40a) of such a lateral slide (4; 4 ').

As mentioned above, the latch 7 is pivotally mounted between a locking position and an unlocking position. In fact and as visible on the figure 4 , the anti-lifting system 5 may, again, include a means 74 designed to ensure the return of the latch 7 from its unlocked position to its locking position.

Such a return means 74 may consist of a return spring made from a wire, in particular a wire, and comprising, on the one hand, at least one turn engaged around the axis of pivoting of the latch 7 and, on the other hand, two strands extending from such a turn and cooperating, one with the flap 70 of the latch 7 and the other with a wall 40 of the slide (4; 4 ') or with the insert 73.

In fact, such a return means 74 is designed to act against the action of the means 8 to push the latch 7, more particularly to push the latch 7 towards the fastening member 6.

As mentioned above, the blade (20, 22, 24) of the occulting element 2 with which the anti-lift system 5 is associated comprises a first blade portion (20, 22, 24) as well as a second blade portion (20, 22, 24).

In fact and according to a first feature, this first blade portion (20, 22, 24) overcomes this second blade portion (20, 22, 24).

In this connection, it should be observed that, in the case of a final blade 20, the first portion 200 of this blade 20 is connected, as the case may be, to the succession of blades 22, to the fabric or thread of the occulting element 2. The second part 200 'of this final plate 20 constitutes the distal end element of this element of occultation 2, more particularly intended to come into contact with the threshold of the opening equipped by the closure device 1 (more particularly through a seal fitted to this final blade 20), this in the fully deployed position of this element d occultation 2 ( figure 5a ).

In the case (not shown) of a blade 22 of a succession of juxtaposed and articulated blades, the first part of this blade 22 is connected to a portion of the occulting element 2 connected to the rotary shaft while the second part of this blade 22 is connected to a free and end portion of this occulting element 2.

Finally, in the case of an initial blade 24, the first portion 240 of this initial blade 24 is connected to the rotary shaft (more particularly through the connecting means 25) while the second portion 240 'of this blade initial 24 is connected, as the case, to the succession of blades 22, the fabric or the net of the occulting element 2.

As mentioned above, this first blade portion (20, 22, 24) and this second blade portion (20, 22, 24) are movable together.

In fact and as shown in the appended figures, these first and second blade parts (20; 22; 24) are slidably mounted relative to each other, this at least in a direction perpendicular to the direction longitudinal extension of this blade (20; 22; 24) and parallel to the plane of extension of the occulting element 2.

• soit sous l'effet du poids de cette seconde partie de la lame (20 ; 22 ; 24) - voire du poids de la portion libre d'extrémité de l'élément d'occultation 2 ou de la toile, du filet et de la lame finale 20 ;
• soit (et de préférence) sous l'effet d'un moyen 27 pour repousser les première et seconde parties de cette lame (20 ; 22 ; 24) l'une par rapport à l'autre et que comporte, notamment intérieurement, une telle lame (20 ; 22 ; 24).

In the deployment or folding phase of the occulting element 2, the second part of the blade (20; 22; 24) is located at a maximum position away from the first blade portion (20; ; 24), this:

• either under the effect of the weight of this second part of the blade (20; 22; 24) - even of the weight of the free portion end of the occulting element 2 or the fabric, the net and the final blade 20;
• or (preferably) under the effect of a means 27 to push the first and second parts of this blade (20; 22; 24) relative to each other and that includes, in particular internally, such blade (20; 22; 24).

In fact, such a repulsion means 27 is preferably constituted by an elastic return means, in particular in the form of a spring or the like.

It will be observed that it is, more particularly, in this maximum removal position that the means 8 for pushing the latch 7 prevents this latch 7 from cooperating with the fastening member 6 (FIG. Figures 5, 5b ).

An additional feature of the invention is that the hooking member 6 and the means 8 for pushing the latch 7 are juxtaposed and extend, internally to the slide (4; 4 '), laterally with respect to the blade (20; 22; 24) and towards the latch 7.

In fact and as shown in the appended figures, the latch 7 (more particularly its second longitudinal edge 72) extends substantially perpendicularly to this repulsion means 8.

According to a first type of embodiment not shown, the attachment member 6 and the means 8 to push the latch 7 extend laterally relative to the lateral end edge 28 of the blade (20; 22; 24), this in a direction parallel to the plane of the concealment element 2 and towards the bottom of the slide (4; 4 ') and the latch 7. In this case, the latch 7 is pivotally mounted about a perpendicular axis in the plane of the occulting element 2, this on the bottom wall of such a slide (4; 4 ') as mentioned above.

A second type of embodiment corresponding to the preferred embodiment of the invention (illustrated in the appended figures) consists in that the hooking member 6 and the means 8 for pushing the latch 7 extend laterally with respect to the plane of occultation element 2, this in one direction forming an angle (especially straight) with this plane and towards a side wall 40 of the slide (4; 4 ') and the latch 7. In this case, the latch 7 is pivotally mounted about a parallel axis in the plane of the concealment element 2 and in the longitudinal extension direction of the blade (20; 22; 24), this on a side wall 40 of a slide (4; 4 ') as mentioned above.

Another feature of the invention relates to the fact that the anti-lift system comprises at least one end piece (9; 9 ') having, on the one hand, an inner portion (90; 90') engaged inside the blade (20; 22; 24), more particularly within a lateral end thereof (20; 22; 24), and, on the other hand, an outer portion (91; 91 ') extending, with respect to the lateral end edge 28 of this blade (20; 22; 24), outside this blade (20; 22; 24).

It is, more particularly, this outer portion (91; 91 ') of such an end piece (9; 9') which comprises, as the case may be, the means 8 for pushing back the latch 7, respectively the fastening member 6.

So and as visible on the figures 2 and 3 this anti-lift system comprises a first nozzle 9 comprising, on the one hand, an inner portion 90 engaged inside the first part of the blade (20; 22; 24), more particularly inside the a lateral end thereof (20; 22; 24) and, on the other hand, an outer portion 91 extending with respect to the lateral end edge 28 of this first portion of the blade (20; 22; 24) outside this first blade portion (20; 22; 24) and having the means 8 for pushing the latch 7.

This system 5 also comprises a second nozzle 9 'comprising, on the one hand, an inner portion 90' engaged inside the second part of the blade (20; 22; 24), more particularly on the inside. one side end thereof (20; 22; 24) and, on the other hand, an outer portion 91 'extending with respect to the lateral end edge 28 of this second part of the blade (20; 22; 24), outside this second blade portion (20; 22; 24) and having the attachment member 6.

According to another characteristic of the invention and as visible in the appended figures, the means 8 for pushing the latch 7 is constituted by a cam track 80 along which the latch 7 slides during the deployment and folding phase of the latch 7. the occulting element 2.

In fact, this cam track 80 extends towards the second portion of the blade (20; 22; 24) and / or along this second portion of the blade (20; 22; 24), more particularly at level of the lateral end edge 28 (particularly along a portion of this lateral end edge 28) of this second blade portion (20; 22; 24), between this blade (20; 22; 24) and the fastening member 6.

In this regard, it will be observed that this cam track 80 is preferably defined at a rib 81 (more particularly than has the outer portion 91 of a first nozzle 9) which then comprises such a track of cam 80.

With regard to said attachment member 6, the latter 6 is constituted by a hook 60, in particular that includes a finger 61 (more particularly than has the outer portion 91 'of a second nozzle 9'), extending towards the first portion of the blade (20; 22; 24).

• en phase de déploiement de l'élément d'occultation 2 (figure 5) ;
• en position extrême de déploiement de l'élément d'occultation dans laquelle la lame finale 20 est en contact avec le seuil de l'ouverture (figure 5a) ;
• en phase de repliement de l'élément d'occultation 2 (figure 5b).
• lors d'une tentative de soulèvement de l'élément d'occultation 2 sous l'effet d'une contrainte exercée sous cet élément d'occultation 2 ou sous la seconde 200' partie de la lame (20 ; 22 ; 24) - figure 5c.

He was represented Figures 5 to 5c the relative positioning of the first 200 and second 200 'parts of a final blade 20, this:

• in the deployment phase of the occultation element 2 ( figure 5 );
• in the extreme position of deployment of the occulting element in which the final blade 20 is in contact with the threshold of the opening ( figure 5a );
• during the folding phase of the occulting element 2 ( figure 5b ).
• during an attempt to raise the occulting element 2 under the effect of a constraint exerted under this occulting element 2 or under the second 200 'part of the blade (20; 22; 24) - figure 5c .

Of course, this principle is transposable to the kinematics of the first and second blade portions of an initial blade 24 and a blade of a succession of blades 22 of a concealment element 2.

Finally, the invention also relates to a closure device 1 which has the characteristics described above and which is, at least in part, constituted by a shutter.

Claims (15)

1. Closure device (1) of the type roller shutter, mosquito net, blind, garage door or the like for equipping an opening defined at the level of a building, and comprising:

   - an element (2) for shading said opening and including at least one slat (20; 22; 24) including a first slat portion (20; 22; 24) and a second slat portion (20; 22; 24) movable relative to each other;

   - side guides (4; 4') inside which the side ends (26; 26') of at least one slat (20; 22; 24) of the shading element (2) move;

   - at least one system (5) for impeding the shading element (2) from being lifted, and including:

   - a hooking organ (6) forming a keeper, and which the second slat portion (20; 22; 24) is provided with;

   - at least one latch (7) pivotally mounted between a locking position, in which this latch (7) cooperates with the hooking organ (6) for impeding the lifting, and an unlocked position, in which this latch (7) is retracted with respect to the hooking organ (6);

   - a means (8) for pushing the latch (7) from a locking position into an unlocking position under the action of a displacement of the slat (20; 22; 24),

   wherein:

   - the latch (7) said at least one system (5) includes for impeding the lifting and which at least one of said side guides (4; 4') includes internally is pivotally mounted on an inner wall (40; 40a) of such a side guide (4; 4');

   - the first slat portion (20; 22; 24) is provided with the means for pushing (8) the latch (7) into an unlocked position;

   - the means (8) for pushing the latch (7) is formed of a cam track (80) extending towards the second slat portion (20; 22; 24) and/or along this second slat portion (20; 22; 24).
2. Closure device (1) according to claim 1, wherein the latch (7) adopts the form of a locking flap (70) including, on the one hand, a first longitudinal edge (71) pivotally mounted about an axis and on an inner wall (40; 40a) of a side guide (4; 4') and, on the other hand, a second longitudinal edge (72), opposite the first longitudinal edge (71), for cooperating, as the case may be, with the hooking organ (6) or with the means (8) for pushing this latch (7).
3. Closure device (2) according to any one of the preceding claims, wherein it includes an insert (73), on the one hand, including the latch (7) and, on the other hand, inserted into a side guide (4; 4'), namely into an opening (41) a wall (40; 40a) of such a side guide (4; 4') includes.
4. Closure device (1) according to any one of the preceding claims, wherein the system (5) for impeding the lifting also includes a means (74) for restoring the latch (7) from its unlocking position into its locking position.
5. Closure device (1) according to any one of the preceding claims, wherein the first slat portion (20; 22; 24) is placed above the second slat portion (20; 22; 24), these first and second slat portions (20; 22; 24) being slidably mounted relative to each other, at least in a direction perpendicular to the longitudinal direction of extension of the slat (20; 22; 24).
6. Closure device (1) according to any one of the preceding claims, wherein the slat (20; 22; 24) includes, namely internally, a means for pushing the first and second portions of this slat (20; 22; 24) relative to each other.
7. Closure device (1) according to any one of the preceding claims, wherein the hooking organ (6) and the means (8) for pushing the latch (7) are juxtaposed and extend, inside the side guide (4; 4'), laterally with respect to the slat (20; 22; 24) and towards the latch (7).
8. Closure device (1) according to any one of the preceding claims, wherein the hooking organ (6) and the means (8) for pushing the latch (7) extend laterally with respect the plane of the shading element (2), while the latch (7) is pivotally mounted around an axis parallel to the plane of the shading element (2) and to the longitudinal direction of extension of the slat (20; 22; 24).
9. Closure device (1) according to any one of the preceding claims, wherein the system (5) for impeding the lifting includes at least one ferrule (9; 9') including, on the one hand, an inner portion (90; 90') inserted inside the slat (20; 22; 24), more particularly inside a side end thereof (20; 22; 24), and, on the other hand, an outer portion (91; 91') extending, with respect to the side end edge of said slat (20; 22; 24), outside of this slat (20; 22; 24), and including, as the case may be, the hooking organ (6) or the means (8) for pushing the latch (7).
10. Closure device (1) according to claim 9, wherein the system (5) for impeding the lifting includes:

    - a first ferrule (9) including on the one hand, an inner portion (90) inserted inside a side end (26) of the first slat portion (20; 22; 24) and, on the other hand, an external portion (91) extending, relative to the side end edge (28) of the first portion of this slat (20; 22; 24), outside this slat (20; 22; 24), and including the means (8) for pushing the latch (7) into an unlocked position;

    - a second ferrule (9') including, on the one hand, an inner portion (90) inserted inside a side end (26) of the second slat portion (20; 22; 24) and, on the other hand, an outer portion (91') extending, relative to the side end edge (28) of the second portion of this slat (20; 22; 24) outside the slat (20; 22; 24), and including the hooking organ (6).
11. Closure device (1) according to any one of the preceding claims, wherein the means (8) for pushing the latch (7) is formed of a cam track (80), which a rib (81) includes, extending towards the second slat portion (20; 22; 24) and/or along this second slat portion (20; 22; 24) at the level of its side end edge (28).
12. Closure device (1) according to claim 10, wherein the outer portion (91) of the first ferrule (9) includes a rib (81), on the one hand, extending towards the second slat portion (20; 22; 24) and/or along this second slat portion (20; 22; 24) and, on the other hand, provided with a cam track (80) forming the means (8) for pushing the latch (7) into an unlocked position.
13. Closure device (1) according to any one of the preceding claims, wherein the hooking organ (6) is formed of a hooking hook (60), namely which a finger (61) includes, extending towards the first slat portion (20; 22; 24).
14. Closure device (1) according to claims 10 and 13, wherein the outer portion (91') of the second ferrule (9') includes a finger (61), on the one hand, extending towards the first slat portion (20; 22; 24) and, on the other hand, provided with a hooking hook (60) forming the hooking organ (6).
15. Closure device (1) according to any one of the preceding claims, wherein it is, at least partially, formed of a roller shutter.

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